// offensive security · antwerp, belgium
Expose your vulnerabilities before the bad guys do. NextdoorSEC thinks like the attacker, and beats them to the breach.
// 02 · The Stakes
The threat is not hypothetical and it is not far away. These are the real numbers and real incidents on our doorstep in Belgium.
Average cost of a data breach worldwide
IBM Cost of a Data Breach, 2025
Data stolen when ransomware hit the City of Antwerp
Play ransomware, 2022
Average time to identify and contain a breach
IBM Cost of a Data Breach, 2025
// 03 · The Mission
One discipline, total focus: offensive security. Every engagement is manual, human-led, and ends with a clear path to fixing what we found.
Attack your perimeter the way the internet does.
Assume breach. Then watch how far we get.
Break your app before your users (or attackers) do.
iOS & Android, taken apart by hand.
Continuous visibility into every weak point.
Your people are the perimeter. Let's test it.
Turn employees into a human firewall.
Expert guidance, tailored to your threat model.
// 04 · Live Recon
Type your domain into the console. We'll show you what an attacker sees first, then book a real engagement to map all of it. No agents to install, no commitment.
// 05 · The Difference
NextdoorSEC is independent and founder-led by design. That focus is the whole point.
Every engagement is run by the founder, end to end. No account managers, no junior handoffs, no outsourcing to a faceless lab.
Real exploitation by a human who thinks like an attacker, not an automated scanner with a logo dropped on the PDF.
One person owns the scope, the findings, the report and the retest. You always know exactly who you are talking to.
NDA-first, always. What we find stays strictly between us. Confidentiality is part of the engagement, not an add-on.
// 06 · The Operator
Chief Hacking Officer
Aydan Arabadzha is the founder and Chief Hacking Officer of NextdoorSEC. He spends his days on the offensive side of security, finding the holes in systems and applications before real attackers do.
// founder-led, by design
NextdoorSEC is an independent, founder-led practice. When you hire us, Aydan does the work himself.
Scoping, testing, the report and the free retest, all by the same person. No outsourcing to a faceless lab, no rotating contractors, and no junior learning on your systems. You always know exactly who is on the other side of the engagement.
// 07 · Transmission
We don't do filler testimonials. Here's the signal, straight from the client.
“”
DAMIEN SMITH
Chief Technology Officer · Hairdog
// Dispatches
The NIS2 rules are now in force in Belgium, and a lot more companies are in scope than expect to be. Here is the plain-language version of what you have to do.
Read Field Notes · 20 June 2026They get used as if they mean the same thing. They don't, and confusing the two is how budgets get spent on the wrong kind of security.
Read Field Notes · 10 June 2026Buying your first pentest is mostly about asking the right questions before anyone touches a keyboard. Here is the checklist we wish every new client had.
Read// 08 · Final Approach · GROUND 0km
Run the free scan and see your exposure in 30 seconds. Then let us map the rest. The first move is always yours.
